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1. Left align all fields
2. Add headings:
   
   1. Field name
   2. Appearance
   3. Function (or Description)
3. Consider adding visible columns for headings
4. Add a short description per field. Say, max 140 characters. (Use this for... Can also be used for... etc.) Where, why, how. (Use on x pages to describe. Try not to use more than x times per page.) 
5. Add link to official documentation, where users can find detailed information on using fields. The link could be by the line "Showcase apps......."

Mockups

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Form fields and descriptions

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Vaadin fields

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and descriptions

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